Add a mobile app to your existing web platform
A mobile companion is not simply the current website placed inside a phone shell. It should use the existing product's accounts, permissions, data, and business rules while adapting the most valuable journeys to mobile contexts. The readiness of the backend and API determines how directly that work can begin.
Questions to answer first
- Does the platform already expose a documented API?
- Which web workflows truly belong on mobile?
- Can users share the same account and permissions?
- What must work with unreliable connectivity?
Three backend starting points
The existing system may be ready for a mobile client, partly ready, or designed only for its current web interface. Each case changes scope.
Existing API is ready
The mobile application can use supported authentication and endpoints. Work can concentrate on mobile product design, client state, device behavior, testing, and store release.
Backend exists, API needs extending
Core data may be available while mobile workflows require new endpoints, notification support, upload handling, or more suitable response shapes and permissions.
No suitable external API
An API layer may need to be designed around the existing business rules and data. A mobile application should not connect directly to a production database.
Select mobile journeys rather than copying every page
Mobile users may need to check a booking, receive an alert, capture a photo, update job status, join an event, or complete a short repeated task. Large administration tables, infrequent configuration, and complex reporting may remain better on web.
Prioritizing these moments gives the app a clear reason to exist and reduces duplication. Shared business rules can remain in the backend, while navigation, interaction, local state, and device behavior are designed specifically for mobile.
Share identity and authorization safely
Users usually expect the same account on web and mobile. The backend must issue suitable tokens or sessions, enforce authorization on every request, and support account recovery and lifecycle rules. The mobile app stores credentials using platform-appropriate secure storage rather than treating the device as trusted.
Roles should come from the server's source of truth. Hiding a screen in the app is not sufficient access control. API responses and actions must enforce what each user or organization is permitted to see and change.
Account for mobile-only requirements
Push notifications, deep links, camera or file access, local caching, offline behavior, synchronization, and store review can add requirements that do not exist in the web product. They should be included only when they support a real journey.
PubPlay demonstrates multiple interfaces around the same live event: an Android host, player web join experience, TV display, and backend. Come Together demonstrates public web and Android surfaces around club, booking, and attendance workflows. Both show why shared data and interface-specific design matter.
- Authentication and shared account state
- Mobile navigation and deep links
- Notifications and device permissions
- Uploads, caching, and synchronization
- Backend changes and app-store delivery
Prepare for a mobile companion assessment
A concise technical and product inventory helps determine whether the work is mostly mobile delivery or a combined client-and-backend project.
- 1Current web journeys and highest-value mobile use cases
- 2Backend and API documentation
- 3Authentication and role model
- 4Staging or test environment availability
- 5Notification, upload, and offline expectations
- 6Android, iOS, and release priorities
Relevant software we've built
These products demonstrate related workflows and architecture. Each link stays inside the FullStack Dev KZ case-study path.
Questions buyers commonly ask
Can a mobile app use our current backend?
Yes, if the backend exposes suitable authenticated APIs for the required workflows. API behavior, permissions, documentation, stability, and test access should be assessed first.
Can users use the same account on web and mobile?
Usually. The existing identity system must support an appropriate mobile authentication flow and enforce the same account and role rules through the API.
Does the backend need to change?
Not always. It may already support the mobile workflows, need a few endpoints, or require a proper external API layer. The answer follows an architecture and workflow review.
Do Android and iOS require separate backends?
Normally both clients can use the same backend and business rules. The client implementations and platform integrations may differ, but the server API should remain shared.
Related development services
See the decision in an industry context
Useful information to bring to the first conversation
A complete technical specification is not required. A clear description of the workflow and constraints is enough to start shaping the right next step.
Read the software estimation guide- The people who will use the software and the main workflow they need to complete
- The platforms involved: mobile, web, administration, backend, or a connected combination
- Existing systems, APIs, spreadsheets, data, or manual processes that must remain or be replaced
- Required integrations, fixed deadlines, release constraints, and must-have outcomes
Find the shortest safe path from web to mobile
Share the current platform, API documentation, account model, and mobile journeys you want to support. We can assess what is reusable and what needs extending.